reeves



(No Model.\ 1 2 Sheet sSheet l.

M. 0. REEVES & E. K. HOOD.

VARIABLE SPEED GOUNTERSHAFT No. 588,354. Patented Aug. 17, 1.897.

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M. O. REEVES & E. K. HOOD. VARIABLESPEED GOUNTERSHAFT.

No. 588,354. Patented Aug. 17,1897.

UNITED ST TE-s PATENT OF ICE.

MILTON O. REEVES AND ERNEST K. HOOD, OF COLUMBUS, INDIANA, ASSIGN- ORS TO THE REEVESv PULLEY COMPANY, OF SAME PLACE.

VARIABLE-SPEED COUNTER-SHAFT.

SPECIFICATION forming part of Letters Patent No. 588,354, dated August 17, 1897. Application filed March 25,1897. Serial No. 6Z9,l60. (llo model.)

To all whom it may concern: The levers 6, which connect the correspond- Be it known that we, MILTON O. REEVES ing disks of each pair, are provided with slots and ERNEST K. HOOD, citizens of the United 11, adjacent to hubs of the disks 3 and 4. States, residing at Columbus, in the county Passing transversely through openings in 5 of Bartholomew and State of Indiana, have the levers and at right angles to slots 11 are invented certain new and useful Improvescrew-studs 10, having enlarged slotted ends ments in Variable-Speed Counter-Shafts, of 13, adapted to engage the ends of thrust-colwhich the following is a specification. lars 14, contacting with the disk-hubs. Car- The object of our invention is to provide a ried by screws 10 and within slots 11 are two I0 variable-speed counter-shaft which will be threaded nuts 12, adapted to jam against opsimple in construction, compact,and efficient; posite sides of the slot and lock the stud to a device having a wide range between maxithe lever. In placing the belt upon the disks mum and minimum speed; a device in which two of the disks are removed from the shaft. the speed may be varied to'a minute degree The belt is then slipped over the shafts and 6 5 I 5 without stopping the machine, and a device the disks replaced in their proper position. in which the parts may be adjusted for wear, Nuts 12 are then adjusted so as to move the shrinkage, or stretching of the transmittingpairs of disks toward each other until the belt belt. is of the proper tension. It will be under- Our invention consists in a combination stood that for thus tightening the belt it is 20 and arrangement of parts hereinafter deonly necessary to have the stud-screws upon scribed and claimed. the ends of the levers, so as to adjust but one In the drawings, Figure l is a plan of our pair of disks. device; Fig. 2, a detailed section of the belt- WVe have found that by using nuts upon tightening arrangement; Fig. 3, a diagramboth thrust-collarsthat is, the thrust-col- 25 matic elevation of our device belted to an orlars for both pairs of disksit is an easy matdina'ry lathe, and Fig. 4 a cross-section of the ter to get the disks in the exact relation necesbelt. I sary to obtainbest resultsthat is, the belt Mounted in a suitable frame are two parcan be adjusted to occupy the largest driving allel shafts 1 and 2, preferably spaced about diameter upon one pair of disks and the other 3o eighteen inches apart and each carrying a disks may then be adjusted so that the belt pair of longitudinally adjustable cone-shaped occupies the smallest driving diameter of disks 3 and at, respectively, each provided them. with oblate spheroid driving-faces. Stretched Secured to shaft 1 upon opposite sides of between the pairs of disks is a beveled-edged the frame are two clutch-pulleys 16, belted to 3 5 driving-belt 5. Corresponding disks of each the main driving-shaft. One of the clutches pair have heretofore been connected by levers is for direct and the other for reverse driving. pivoted half-way between the shafts, as shown -The engaging sleeves of the clutches are in the drawings. This method of construcyoked to a shifter-rod 18 by means of straption is shown in the application of M. O. yokes 19 and 20. A shifter-lever 21 is seo Reeves, one of the inventorshereimfiled Occured to shifting-rod 18 and is connected with tober 12, 1896, Serial No. 608,552, for improvea horizontal shift 22, located conveniently to ment in speed-varying mechanism. In this the machine-operator. By throwing shift 22 type of machine difficulty has been found in in one direction one clutch engages shaft 1 lacing a belt tight enough to work efficie'ntly and the machine is driven in one direction, 45 upon the disks, and even if laced tight enough and by throwing the shift in the opposite diwhen the device was set up the lacing would rection the other. clutch is engaged and the stretch or pull out and some difficulty enmachine is reversed. countered. We have shown a preferredarrangement In our present arrangement we have shown for operating levers 6, consisting of a right I00 50 a construction which enables the use of a conand left hand threaded shaft 9, carrying nuts tinuous driving-belt having no laced. joint. 8, engaging with levers 6. A sprocket 23 isv mounted on the end ofscrew-shaft f) and a sprocket-chain 21L passes around the sprocket 25 adjacent the operator, provided with an operating-handle 26. It will be seen that by the above arrangement the forward and reverse movement of the machine and the variation of speed is entirely within the control of the operator and is conveniently located. The device is adapted to take the place of the ordinary cone counter-shaft and spindle-con 0.

Our improved counter-shaft occupies less space than the ordinary cone counter-shaft and considerably reduces the weight of overhead machinery common to all shops.

\Ve claim as our invention- 1. In a speed-varying mechanism, the combination of a frame, two parallel shafts mounted therein, a pair of cone-shaped driving elements splined to each shaft, a belt connecting the pairs, levers pivoted between the shafts and adjacent to the corresponding driving elements of each pair, and a transversely-adjustable connection between one or more of the levers and its corresponding driving elemcn t, substantially as and for the purpose set forth.

2. In a variablespeed counter-shaft, the combination of a frame, two parallel shafts mounted therein, a pair of cone-shaped driving elements, splined to each shaft, a belt connecting the pairs, levers pivoted between the shafts, and adjacent to the corresponding driving elements of each pair, threaded studs carried by the leverand engaging with thrustcollars contacting with the hubs of the driving elements, and means for adjusting the studs transversely relatively to the lever, substantially as and for the purpose set forth.

3. In a variable-speed counter-shaft, the combination of a frame, two parallel shafts mounted therein, a pair of cone-shaped driving elements splined to each shaft, a belt connecting the pairs, levers pivoted between the shafts and adjacent to the corresponding driving elements of each pair, threaded studs carried by the levers, and engaging with thrust-collars contacting with the hubs of the driving elements and lock-nuts, mounted on the studs and adapted to jam against the levers, substantially as and for the purpose set forth.

t. In a variable-speed counter-shaft the combination of a frame, two parallel shafts mounted therein, a pair of cone-shaped driving elements, splined to each shaft, a belt connectin g the pairs, levers pivoted between the shafts, and adapted to actuate the driving elements, a direct and reverse clutch carried by one of the shafts, a shifter adapted to actuate either clutch and a pulley secured to the other shaft and adapted to carry a belt connecting with a machine to be operated, substantially as and for the purpose set forth.

MILTON O. REEVES. ERNEST K. HOOD.

lVitnesses:

EUGENE WYNEGAR, JOHN J EWELL. 

